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Reversion of Supra-Ventricular Tachycardia Through High Positive End-Expiratory Pressure During Mechanical Ventilation in Critically Ill Patients.
J Coll Physicians Surg Pak
January 2025
Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
The Valsalva manoeuvre is widely recognised for its effectiveness in reverting supra-ventricular tachycardia (SVT) in patients with good coordination. However, this is not applicable in sedated ventilated patients and there is a dearth of literature regarding the application of Valsalva in unconscious patients on mechanical ventilation. The authors, for the first time, present a novel non-pharmacological method to treat SVT in critically ill patients on mechanical ventilation, employing the high positive end-expiratory pressure (PEEP) technique.
View Article and Find Full Text PDFUtility of using far-field R-wave signals in the detection of fatal ventricular arrhythmia.
J Arrhythm
February 2025
Current guidelines recommend cardioverter-defibrillator (ICD) programming, including faster detection rates, longer detection durations, and strict discrimination for supraventricular tachycardia (SVT) to prevent unnecessary ICD treatment. This delayed-style ICD programming could lead to a rise in the possibility of VF undersensing. To avoid this risk, an innovative algorithm known as VF Therapy Assurance (VFTA; Abbott, Sylmar, CA) has been developed.
View Article and Find Full Text PDFWe report a case of long RP' tachycardia diagnosed as fast-slow atrioventricular nodal reentrant tachycardia (AVNRT) with a bystander nodoventricular pathway (NVP). Differential responses to right ventricular extrastimuli from the base and apex highlighted the anatomical proximity of the NVP attachment, contributing to the diagnosis.
View Article and Find Full Text PDFOnce a saint, now a sinner: An appropriate or inappropriate shock?
J Arrhythm
February 2025
Department of Cardiology, Electrophysiology Division Sree Chitra Tirunal Institute for Medical Sciences and Technology Thiruvananthapuram Kerala India.
Critical analysis of electrograms of any therapy delivery event is paramount to identify the etiology, specificity, and sensitivity of the programmed algorithms to differentiate supraventricular versus ventricular tachycardia, its effectiveness, and potential interventions to prevent recurrence. Besides the aspects mentioned above, this case delves into the potential limitations of existing algorithms and the adverse effects of anti-tachycardia pacing.
View Article and Find Full Text PDFDuodromic atrioventricular reentry tachycardia: a case report of a rare adenosine insensitive supraventricular tachycardia.
Eur Heart J Case Rep
January 2025
Arrhythmology, Pacing and Electrophysiology Unit, Cardiology Service, Santa Marta Hospital, Central Lisbon Hospital University Centre, R. de Santa Marta 50, Lisboa 1169-024, Portugal.
Background: Accessory pathways (AP) are associated with an increased risk of atrioventricular reentry tachycardia (AVRT), presenting as a wide QRS tachycardia if the mechanism is antidromic. Rarely, AVRT may not respond to adenosine, suggesting a duodromic mechanism if the patient has multiple APs. Herein, we present a case of a male patient with multiple APs, wide QRS complex tachycardia, and resistance to adenosine.
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